From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266161AbUALMqR (ORCPT ); Mon, 12 Jan 2004 07:46:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266165AbUALMqR (ORCPT ); Mon, 12 Jan 2004 07:46:17 -0500 Received: from [212.239.225.130] ([212.239.225.130]:3201 "EHLO precious.kicks-ass.org") by vger.kernel.org with ESMTP id S266161AbUALMqF (ORCPT ); Mon, 12 Jan 2004 07:46:05 -0500 From: Jan De Luyck To: Kiko Piris Subject: Re: [PATCH] Laptop-mode v7 for linux 2.6.1 Date: Mon, 12 Jan 2004 13:45:51 +0100 User-Agent: KMail/1.5.4 Cc: Bart Samwel , linux-kernel@vger.kernel.org, Dax Kelson , Bartek Kania , Simon Mackinlay References: <3FFFD61C.7070706@samwel.tk> <200401121212.44902.lkml@kcore.org> <20040112121956.GA8226@portsdebalears.com> In-Reply-To: <20040112121956.GA8226@portsdebalears.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200401121345.51506.lkml@kcore.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Monday 12 January 2004 13:19, Kiko Piris wrote: > As you don't say if you have checked it, here goes my suggestion: > > First of all, you should assure there's no process doing reads [*] that > cause a cache miss (eg. daemons like postfix that check the queue every > few seconds). You can tell this running vmstat 1 and see that bi and bo > [**] stay at 0. bi == 0 in 99% of the time. It caused one spinup sofar, and the disk has been spun op 10 times sofar. > [*] Processes making disk writes are supposed to be "harmless", because > laptop-mode will delay those writes to disk (that's what it's supposed > to do! ;). Well, it looks otherwise to me. Jan -- It's hard to keep your shirt on when you're getting something off your chest.